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Investments - Investment Income (Expense) Comprised Primarily of Interest and Dividends (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Net Investment Income [Line Items] |  |  |  |
Total investment income | $ 16,069 | $ 13,366 | $ 45,444 | $ 36,504
Less: Investment expenses | (663) | (611) | (1,855) | (1,769)
Net investment income | 15,406 | 12,755 | 43,589 | 34,735
Available-for-sale debt securities |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Investment income | 9,430 | 6,325 | 25,034 | 18,122
Equity securities |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Investment income | 864 | 953 | 2,600 | 2,874
Cash and cash equivalents |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Investment income | 5,689 | 5,961 | 17,397 | 15,113
Other |  |  |  |
Net Investment Income [Line Items] |  |  |  |
Investment income | $ 86 | $ 127 | $ 413 | $ 395

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- Definition Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 + Details
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